com.javadude.workingsets.internal.NatureWorkingSetPage.java Source code

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Here is the source code for com.javadude.workingsets.internal.NatureWorkingSetPage.java

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/*******************************************************************************
 * Copyright (c) 2008 Scott Stanchfield
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *******************************************************************************/
package com.javadude.workingsets.internal;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectNatureDescriptor;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.viewers.CheckStateChangedEvent;
import org.eclipse.jface.viewers.CheckboxTableViewer;
import org.eclipse.jface.viewers.ICheckStateListener;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.IWorkingSet;

import com.javadude.workingsets.DynamicWorkingSetPage;

/**
 * A property page for nature-based dynamic working sets.
 * This page displays a checklist of all natures defined in the workspace
 *    to filter projects for inclusion in the working set
 * @author Scott Stanchfield
 */
public class NatureWorkingSetPage extends DynamicWorkingSetPage {
    private String natureId_ = null;

    public NatureWorkingSetPage() {
        super("com.javadude.workingsets.NatureWorkingSetPage", "com.hcrest.classpath.natureWorkingSetPage",
                "Select project natures", Activator.getImageDescriptor("icons/logo16.gif"));
    }

    /**
     * Create the UI for the property page
     */
    @Override
    protected void createFields(Composite parent) {
        if (getWorkingSet() != null) {
            natureId_ = getWorkingSet().getName().substring(8);
        }
        Label label = new Label(parent, SWT.NULL);
        label.setText("Registered Natures:");
        label.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, true));
        int style = SWT.MULTI | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION | SWT.HIDE_SELECTION
                | SWT.CHECK;
        final CheckboxTableViewer table = CheckboxTableViewer.newCheckList(parent, style);
        List<String> natures = new ArrayList<String>();
        for (IProjectNatureDescriptor nature : ResourcesPlugin.getWorkspace().getNatureDescriptors()) {
            natures.add(nature.getNatureId());
        }
        Collections.sort(natures);
        for (String nature : natures) {
            table.add(nature);
        }
        if (natureId_ != null) {
            String[] split = natureId_.split("[,\\s]");
            for (String nature : split) {
                table.setChecked(nature, true);
            }
        }
        table.getTable().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        table.addCheckStateListener(new ICheckStateListener() {
            public void checkStateChanged(CheckStateChangedEvent event) {
                natureId_ = null;
                for (Object o : table.getCheckedElements()) {
                    if (natureId_ == null) {
                        natureId_ = (String) o;
                    } else {
                        natureId_ += ',' + (String) o;
                    }
                }
                dialogChanged();
            }
        });
    }

    /**
     * Get all projects that are tagged with at least one of the selected
     *    project natures
     */
    @Override
    protected List<IAdaptable> getMatchingItems() {
        List<IAdaptable> projects = new ArrayList<IAdaptable>();
        for (IProject project : ResourcesPlugin.getWorkspace().getRoot().getProjects()) {
            if (project.isOpen() && NatureWorkingSetUpdater.projectHasNature(project, natureId_)) {
                projects.add(project);
            }
        }
        return projects;
    }

    @Override
    protected String getWorkingSetName() {
        return "Nature: " + natureId_;
    }

    @Override
    protected void initFields(IWorkingSet workingSet) {
        natureId_ = workingSet.getName().substring(8);
    }

    @Override
    protected boolean validate() {
        if (natureId_ == null) {
            updateStatus("At least one nature must be selected");
            return false;
        }
        return true;
    }
}